Incinerator



Aug. 27, 1957 J. P. H'ARNER 2,804,030

INCINERATOR Filed March 50. 1955 3 Sheets-Sheet l 2 Joseph R Homer IN VEN TOR.

J. P. HARNER INC I NERATOR 3 Sheets-Sheet 2 Aug. 2 7, 1957 Filed March 30, 1953 Fig. 2

Fig. 3

Joseph R Harner mmvron.

J. P. HARNER INCINERATOR 3 Sheets-Sheet 3 Aug. 27, 1957 Filed March 30, 1953 Fig. 4

Joseph R Harner INVENTOR.

United States Pfltfiim O INCINERATOR Joseph P. Harner, Nevada, Mo., assignor to The W. F.

Norman Sheet Metal Mfg. Co., Nevada, Mo., a corporation of Missouri Application March 30, 1953, Serial No. 345,497 1 Claim. or. 110-18 This invention relates generally to incinerators and more particularly pertains to a device for burning rubbish which operates in an automatic manner.

A primary object of this invention is to provide an incinerator having a portion of its operating assembly movable in response to the weight of rubbish placed thereon so as to control the supply of fuel to the burner in an automatic manner.

Another object of this invention is to provide an inci'nerator with means for automatically controlling its burning operation in response to the amount of rubbish which remains unburned in the device.

Another object of this invention is to provide an incinerator of the character described which includes a deflector grate, a movable grate, and a burner grate so disposed and related as to present an open top basket construction for receiving rubbish to be burned.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a vertical section through the incinerator showing details of its internal construction;

Figure 2 is a vertical section taken substantially along the plane of section line 2-2 of Figure 1;

Figure 3 is an enlarged vertical section through the fuel supply control valve showing details of its construction; and

Figure 4 is a vertical elevation of the incinerator with portions broken away to show the path of the draft and cooling air.

Referring now more particularly to the drawings, reference number indicates the outer casing or housing for the incinerator which is provided with a bottom wall 12 and open top covered by the top member 14 carrying the flue outlet pipe 16. Disposed within the housing and spaced therefrom is a fire box 18 which includes a top wall 20 and whose side walls adjacent the top are provided with apertures 22 for a purpose presently apparent.

The previously mentioned flue outlet projects into the fire box and is provided with wall portions 24 which, in cooperation with an opposite portion of the side walls of the fire box forms the smoke outlet chamber terminating in a floor 26 adjacent which are disposed the smoke grill openings 28 which are presented intermediate the grill bars 30, as shown most clearly in Figure 2. The grill bars are formed in a substantially U-shaped plate 32 having side leg portions 34 secured, as by bolts 36, to opposite walls of the fire box, top plate 38 completes the structure of the flue assembly so as to provide an enclosed smoke chamber 40.

Support plate 42 is secured at its flanged upper end to the floor 26 of the flue assembly and its lower flanged edge 44 cooperates with an oppositely disposed flange 46 on the supporting plate 48 to support a deflector assembly 50. The deflector assembly includesarectangular ram 52 having two of its sides formed as downwardly converging plates or fingers 54 and the intermediate portions are formed as vertical side walls 56. These sides journal a pivot shaft 58 which carries a plurality of vertically movable fingers 60 which are disposed in staggered relation to the plate 54 and are movable with the deflector assembly to provide a bottom therefor. The opposite ends of the finger assemblies are provided with counterweights 62 for the purpose of normally urging the fingers upwardly. v I t A burner grate assembly 64 is disposed below the movable finger and includes a tunnel 66 having a top 1 68 and side walls 70, which tunnel is provided to obtain a maximum of protection for a burner 72, the burner 82 which control a spring urged ball valve 84 in response to rotation of the shaft. This controls the supply of fuel flowing through the inlet pipe 86 to the line 88, as will be readily apparent. The valve is, of course,p rovided with a casing 90 and is provided with a pilot by-pass port 92 and adjusting valve 94. V

The removable ash box 96 and insulated swinging door 98 provided with the side walls 100 completes the structural assembly of incinerator with the exception of the various louvers and draft air openings hereinafter described.

In operation, with the grate assembly devoid of any rubbish or material to be burned, the movable fingers will be urged to their uppermost position which will actuate the cam shaft 80 to seat the ball valve and allow only a sufficient amount of fuel to flow through the by-pass to maintain a pilot flame in the burner assembly. When a quantity of charge of rubbish is disposed within the incinerator, the same will rest upon the movable fingers and force them downwardly by virtue of its weight wherein the control valve will be open and the flame from the burner will impinge upon rubbish to burn it. The rubbish will, of course, progressively burn to ash, which ash falls between the movable fingers and the space plate of the basket grate assembly and will then fall through the burner grate to the ash pit. A portion of the weight upon the movable fingers is consequently removed and they will swing progressively upwardly as such weight is further removed thus lessening the intensity of the flame from the burner, which results in a flame and amount of burning properly proportioned as to the amount required by the remainder of charred or unburned rubbish which remains upon the removable fingers.

Since the incinerator is primarily intended for use in a modern home, it will be necessary to conduct as much of the heat generated in the burner outwardly through the flue as is possible to prevent undesirable warmth emanating from the device. For this reason, the air space 102 presented by the spacing between the fire box and the housing communicates with the atmosphere through the louvers 104 disposed adjacent the lower portion of the incinerator and by the louver assembly 106 at the upper portion of the incinerator. The air space communicates with the flue outlet through the various openings 22, 108 and 110, thus maintaining a constantly moving mass of air between the housing and the fire box which will tend to prevent overheating of the casing which would be undesirable.

The upper portion of the flue outlet is provided with a concentric inner collar 112 which, in conjunction with the funnel-shaped deflector 114 in the adaptor coupling Patented Aug. 27, 1957 thle device7wi1lbe readily understood and further ex-.

planation is. believed to be unnecessary. However, since numerous modifications and changes will. readily occur,

to those skilled inthe art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equ valents may be resorted to, falling within the scope of, the appended claim.

What is claimed as newris as follows:

An incinerator comprising a firebox having vertical side wallsand a top, a deflector at the lower end of said firebox, said deflector having downwardly converging portions whose lower edges are spaced to provide an enlarged central opening, a stationary grate disposed below said opening and forming a partial closure therefor, a housing ,enclosingsaid firebox, a stationary burner mounted under said stationary grate, a fuel supply means communicatcd with said burner, a valve control for said suppi 'meansg an operating member connected to said valve control for operating the same, a movable grate pivotally mounted in said opening, a pivot rod adjacent the upper surface of said stationary grate at one side thereof, said movable grate being mounted on said pivot rod, said movable grate having a Weight disposed on one side of the pivot rod for urging the movable grate to an upwardly inclined position within the deflector for receiving refuse thereon, an extension on said'pivot rod connected to said operating member for the valve control for controlling the supply fuel to the burner during the entire range of movement of the movable grate, said deflector having mutually spaced vanes forming the converging portions thereof, said movable grate including a plurality of spaced fingers extendingbetween said vanes for vertical swinging movement, a flue for said firebox,

said housing having air inlets therein and with said firebox forming an air jacket, and apivotal closure in a wall of said housing for said firebox to permit deposit of refuse ontothe movable grate in the firebox.

ReferencesCited in the file of this patent UNITED STATES PATENTS 1,124,529 Rudd Jan. 12, 1915 1,194,385 Hoover Aug. 15, 1916 1,529,854 Treganowan Mar. 17, 1925 1,545,497 Kener July 14, 1925- 1,697,524 Epstein Jan. 1, 1929 1,715,954 Schuetz June 4,1929 1,978,472 Naulin Oct.-30, 1934 2,234,550 Bridgeman Mar. 11, 1941 2,364,286 Furlong Dec. 5, 1944 2,517,074 Ames Aug. 1, 1950 2,716,386 Smart Aug. 30, 1955 FOREIGN PATENTS 48,672 Switzerland Aug. 19, 1909 

